Choose the best answer for the following sentence:
Be sure to wash the vegetables thoroughly. A lot of pesticides residue _____________ on unwashed produce. 
A. can find             
B. can found                    
C. can be found              
D. can be finding

Choose the best answer for the following sentence:
_____________ before you enter the building.
A. All cigarettes must extinguish
B. You must be extinguished all cigarettes
C. All cigarettes must be extinguished
D. You must have been extinguished all cigarettes

Choose the best answer for the following sentence:
He was a friendly waiter. He spoke to the writer _____________. 
A. friendly             
B. as friends  
C. like friends    
D.  in a friendly way

Choose the best answer for the following sentence:
We are going to stay in a little cottage, and that will be very nice because I haven't been to the seaside __________ two years at least.
A. in                                            
B. for 
C. at                 
D. within

Choose the best answer for the following sentence:
They are ___________________________. 
A. woman-professors                
B. woman s-professors
C.  women professors                  
D. womens' professors

Choose the best answer for the following sentence:
After the wresting class, your son will improve his coordination, increase his endurance, and become ____________.
A. much strongest
B. most stronger
C. much stronger
D. more stronger

Choose the best answer for the following sentence:
Shots usually succeed when the goalie is out ___________ position. 
A. into              
B. for                 
C. of                  
D. off

Choose the best answer for the following sentence:
The Mayan Indians ____________ an accurate and sophisticated calendar more than seven centuries ago.
A. were developed         
B. developed
C. are developed            
D. have been developed

Choose the best answer for the following sentence:
In the Middle East you __________ take care not to admire anything in your hosts’ home. They will feel that they have to give it to you. 
A. must             
B. should              
C. can 
D. could

Choose the best answer for the following sentence:
Sometimes it is ____________ to find suitable books for our children. 
A. difficult
B. difficulty                     
C. difficultly                   
D. difficulties